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java.lang.ArrayIndexOutOfBoundsException: -1	at org.jbox2d.collision.BroadPhase.moveProxy(BroadPhase.java:457)	at org.jbox2d.collision.Shape.synchronize(Shape.java:168)	at org.jbox2d.dynamics.Body.synchronizeShapes(Body.java:677)	at org.jbox2d.dynamics.World.solve(World.java:606)	at org.jbox2d.dynamics.World.step(World.java:440)	at game.run(game.java:570)	at java.lang.Thread.run(Unknown Source)